Question

QUESTÃO 3- Determine o valor de X na figura: *

(A) 30
(B) 50
(C) 90
(D) 100
(E) 150​

Answer 1

Resposta:

$2x + 20 + 4x + 40 + 6x + 60 = 180 \\ 12x + 120 = 180 \\ 12x = 60 \\ x = 60 \div 12 \\ x = 5$